From 6fa16090efbca3a9ae74847e720f3c84ea18ce3d Mon Sep 17 00:00:00 2001 From: Richard Zhu Date: Fri, 24 Oct 2025 15:31:48 +0800 Subject: [PATCH] arm64: dts: imx8mq-evk: Add vpcie3v3aux regulator for PCIe M.2 connector MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Refer to PCI Express M.2 Specification r5.1 sec3.1.1 Power Sources and Grounds. PCI Express M.2 Socket 1 utilizes a 3.3 V power source. The voltage source, 3.3 V, is expected to be available during the system’s stand-by/suspend state to support wake event processing on the communications card. Add vpcie3v3aux regulator to let this 3.3 V power source always on for PCIe M.2 Key E connector on i.MX8MQ EVK board. Signed-off-by: Richard Zhu Reviewed-by: Frank Li Signed-off-by: Shawn Guo --- arch/arm64/boot/dts/freescale/imx8mq-evk.dts | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts index 852992b915a39..d48f901487d49 100644 --- a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts +++ b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts @@ -398,6 +398,7 @@ <&clk IMX8MQ_CLK_PCIE2_PHY>, <&clk IMX8MQ_CLK_PCIE2_AUX>; vpcie-supply = <®_pcie1>; + vpcie3v3aux-supply = <®_pcie1>; vph-supply = <&vgen5_reg>; supports-clkreq; status = "okay"; -- 2.47.3